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Ber [7]
3 years ago
15

Is 7/8 an irrational number

Mathematics
1 answer:
kipiarov [429]3 years ago
6 0
No, 7/8 = 0.875
it's rational number
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Can someone help me figure out the answer?
Ahat [919]

Answer:

You will break even on the car wash when you buy 13.5 gallons. As long as you buy that or more, it is cheaper to get the car wash.

Step-by-step explanation:

In order to find this, we need to create equations for both situations. If we let x equal the amount of gallons purchased, we can model the first equation as:

f(x) = 3.35x

And the second equation as:

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Then to find when they equal each other, we can set the two equations equal to each other and solve for x.

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0.30x = 4.05

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This means once you buy 13.5 gallons, the prices will be the same. Any amount over that and the car wash will be cheaper

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